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When this study was performed, R. Rozier, F. Kiamilev, J. Ekman, and P. Chandramani were with the University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, North Carolina 28223. USA

Abstract

We present a method for automating the creation of
complementary-metal-oxide-semiconductor (CMOS) integrated circuits that
successfully utilizes a large number of area-distributed pads for
input–output communication. This method uses Duet Technologies’
epoch computer-aided-design tool for automated placement
and routing of CMOS circuitry, given a schematic netlist as an
input. The novelty of this approach is that it uses Duet
Technologies’ eggo program to place and route area-pad
signals. To verify this methodology, it is applied to the design of
a digital signal-processing circuit, with 200 optical area-pad
input–outputs and 44 perimeter-pad input–outputs, that is being
fabricated with Bell Labs 1997 CMOS–multiple-quantum-well
foundry. The layout results are as good as or better than the
results obtained by manual layout.

References

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